Wednesday, August 8, 2007

Historical biogeographers

Historical biogeographers also make use of a tool called an area cladogram. This diagram is made by taking a taxonomic tree, which shows various species and their relatedness, and replacing the species names with the geographic location in which those species are found. This new tree allows scientists to determine how the differences in environments have effected the evolutionary history of different species of common origin. A sample area cladogram is shown below:

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